CN109867524A - The preparation method and device of aperture silicon carbide controlled asymmetric compound filtering periosteum - Google Patents
The preparation method and device of aperture silicon carbide controlled asymmetric compound filtering periosteum Download PDFInfo
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Abstract
The present invention provides the preparation method and device of a kind of aperture silicon carbide controlled asymmetric compound filtering periosteum, belongs to gas solid separation technical field.This method will mix after the broken mill of raw material first, and then pelletizing mixes, then carries out isostatic pressing, fires after dry, carry out plasma spraying, raw materials used is silicon carbide, kaolin, aluminium oxide, pore creating material, sintering aid, binder.Device using obtained filtering periosteum includes gas outlet, pressure transmitter mouth, gas bag slag-drip opening, impulse jet nozzle, air inlet, sewage draining exit, silicon carbide asymmetric compound filtering periosteum, back blow port.20~960 silicon carbide filter pipes of filtering indoor location in the middle part of device, ash-laden gas enter filter chamber from air inlet, are carbonized the filtered clean gas of silicon screen pipe from impulse jet nozzle and enter present apparatus internal pipeline, are finally discharged from gas outlet.The advantages that present invention has both excellent anti-corrosion property at high temperature and thermal shock resistance, and strainability is preferable, and filtering accuracy is high, long service life.
Description
Technical field
The present invention relates to gas solid separation technical fields, particularly relate to a kind of aperture silicon carbide controlled asymmetric compound screen pipe
The preparation method and device of film.
Background technique
High-temperature dust removal porcelain filtration technology is a new technology in Environmental-protecting dust-removing field.With conventional cyclone dust removal, electrostatic
The technologies such as dedusting are compared, which, can be wide more suitable for the dust in removal high temperature (600 DEG C or more) and corrosivity industrial gasses
It is general to be applied to coal gasifying process, coal oil, the processing of electric boiler flue dust, the life of fluid catalytic cracking bed process, polypropylene, polyethylene
Dry method dust in production, the purification of the high-temperature flue gas such as metallurgical smelting furnace, waste incinerator, boiler of power plant, calcium carbide steam stove, hot gas stove
With dedusting etc..The key core material of the technology is high-temperature dust removal ceramic filter tube.Its dust-cleaning principle is to utilize porous ceramics
The gap of pipe stops the dust in industrial gasses, is allowed to be gathered in ceramic pipe outer wall, and clean industrial gasses pass through pottery
Porcelain tube empties or sends to recycling；The dust for being gathered in ceramic pipe outer wall reaches a certain level and to make dust by pulse backblowing
It is detached from ceramic pipe outer wall, to make ceramic tube but also with the function of filtering dust.
How separative efficiency is promoted under the premise of guaranteeing useful life longevity for filtering material, will be realize efficiently,
The key of energy-efficient isolation technics.Some researches show that porous ceramics permeability depends mainly on the porosity.Therefore, in seperation film
During the design of Structural Parameters of component, high porosity filters material is particularly important, and can reach efficient, energy-efficient point
From key technology be that by the technology of preparing of high porosity silicon carbide ceramics filtering material.
Porous silicon carbide ceramic is prepared at present, mainly uses silicon-carbide particle, pore creating material, inorganic high-temperature agglomerant three
It is compound to fire at high temperature, the porosity of material be by the type of pore creating material, volume, dispersion effect, silicon-carbide particle
The control of many factors such as granularity, gradation, manufactured porous silicon carbide ceramic material porosity is not high and fluctuates greatly, limits porous
Application and development of the silicon carbide ceramics in filtering industry.Therefore, it develops a kind of high porosity and has high-intensitive silicon carbide more
The preparation method of hole ceramic material is very necessary.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of systems of aperture silicon carbide controlled asymmetric compound filtering periosteum
Preparation Method and application apparatus.
It is as follows that the method comprising the steps of:
S1: the broken mill of raw material: it is 1mm that silicon carbide, pore creating material, sintering aid, inorganic high-temperature agglomerant are crushed to partial size respectively
Below；Then silicon carbide, sintering aid, inorganic high-temperature agglomerant are used into light-duty ball mill grinding 5h~14h respectively, cross 220 respectively
~380 meshes, it is spare；
S2: raw material mixing: light-duty ball mill is added in mass fraction ratio in the raw material prepared in S1 and is mixed: carbonization
Silicon 75%~90%, sintering aid 5%~15%, inorganic high-temperature agglomerant 5%~10%, using distilled water as dispersing agent, distillation
The mass ratio of water and raw material is 3:1, and mixed slurry is made in 1~3h of mixing；
S3: pelletizing: being put into balling-up in nodulizer for the mixed slurry prepared in S2,40~60 turns/min of nodulizer revolving speed,
Obtain spherical particle, 0.2~0.5mm of ball particle diameter；Spherical silicon-carbide particle: firing temperature is made using rotary kiln: 1100
~1400 DEG C, heating rate: 5~10 DEG C/min, the firing time: 8~20h；
S4: raw material mixing is aging: gained raw material in S1 and S3 is mixed to prepare mixture, the matter of each raw material in kneader
Measure score are as follows: spherical silicon-carbide particle: 75%~90%, inorganic high-temperature agglomerant: 5%~15%, sintering aid: 2%~10%,
Pore creating material: 2%~18%；Water-soluble binder, lubricant and water are added in mixture, the additional amount of water-soluble binder is
The 5%~10% of mixture quality, the additional amount of lubricant is the 2%~5% of mixture quality, and the additional amount of water is mixture
The 14%~18% of quality mixes 1~3h, then with vacuum deairing machine pugging, it is aging for 24 hours, obtain aging good pug；
S5: isostatic pressing: good pug aging in S4 is added in mold, is put into mold etc. after clean surface quiet
Pressurization in press, briquetting pressure are 180~200MPa, and it is 1000~3000mm that length, which is made, and outer diameter is 40~200mm, wall thickness
For the screen pipe green body of 5~12mm；
S6: body drying: the screen pipe green body of isostatic pressing in S5 is put into 30~60min of sizing in micro-wave oven, so
After be put into 120 DEG C of infrared drying ovens dry 3~8h, microwave power 5kW, frequency is 2450MHz ± 50MHz；
S7: green body firing: green body dried in S6 is put into shuttle kiln, is first warming up to 800 with the rate of 3 DEG C/min
DEG C, 2h is kept the temperature, then be warming up to 1200~1500 DEG C with the rate of 5 DEG C/min, keeps the temperature 8~15h, filter tube support body, mistake is made
The micropore size of chimney filter supporter is 50~200 μm, and wall thickness is 6~10mm；
S8: filter tube support body outer surface obtained in S7 plasma spraying: is sprayed into one layer of mullite fiber and corundum
Slurry: mullite fiber is 1:2 with corundum mass ratio, and water content is the 40% of gross mass, forms filter membrane, filter membrane
With a thickness of 100~200 μm, through the dry 30~60min of micro-wave oven, be put into shuttle kiln firing: 1240~1300 DEG C of firing temperature is risen
Warm 5 DEG C/min of rate, 10~15h of firing time are prepared silicon carbide asymmetric compound filtering periosteum, filter the micropore of periosteum
Diameter is 0.1~2.0 μm, and film thickness is 100~200 μm.
Wherein, pore creating material be one or more of methylcellulose, starch, carbon dust, rice husk, sintering aid be yttrium oxide,
One or more of calcium oxide, aluminium nitride, magnesia, rare earth oxide, inorganic high-temperature agglomerant be silica, kaolin,
One or more of bentonite, aluminium oxide, water-soluble binder are carboxymethyl cellulose, polyvinyl alcohol, one in waterglass
Kind, lubricant is one or both of tung oil, soya-bean oil.
The porosity of silicon carbide asymmetric compound obtained filtering periosteum is 30%~60% in S8, softening temperature >=1300
DEG C, 800 DEG C~20 DEG C anti-thermal shocks, which recycle 30 times, not to crack, acid-fast alkali-proof >=99.5%, compression strength >=34MPa, to flue gas
Efficiency of dust collection is up to 99.8%.
Using silicon carbide asymmetric compound made from above-mentioned preparation method filtering periosteum device, especially suitable for high temperature,
The non-serviceable working condition of the organic films such as high pressure, deep-etching, can be widely applied to the industries such as petroleum, chemical industry, medicine, environmental protection
The processes such as filtering, purification, degerming, impurity elimination, the device include gas outlet, pressure transmitter mouth, gas bag slag-drip opening, impulse jet nozzle,
Square casing, air inlet, sewage draining exit, pneumatic hammer, fixing bolt, lower fixed frame, silicon carbide asymmetric compound filtering periosteum, pressure difference become
Send device, upper holder, back blow port, gas bag air inlet and manhole；Gas outlet is located at device top, and pressure transmitter mouth is located at gas bag
Above air inlet, gas bag air inlet is located at device upper side, and gas bag slag-drip opening is located at below gas bag air inlet, gas bag slag-drip opening
Back blow port is arranged in side, and apparatus main body is square casing, and upper holder is arranged in square casing inner upper, and silicon carbide is asymmetric multiple
Close filtering periosteum be located in square casing, silicon carbide asymmetric compound filtering periosteum bottom be nested on fixing bolt, fixing bolt and
Lower fixed frame is connected, and is fixed on upper holder at the top of silicon carbide asymmetric compound filtering periosteum, silicon carbide asymmetric compound
It filters and is tightly connected at the top of periosteum with impulse jet nozzle；Air inlet is located at side below device square casing, the symmetrical side of air inlet
Population is set, and sewage draining exit is located at bottom of device, pneumatic hammer is arranged below device, and pressure difference transmitter is arranged in square casing side.
20~960 silicon carbide asymmetric compounds of filtering indoor location in the middle part of square casing filter periosteum, ash-laden gas
Enter filter chamber from air inlet, is carbonized the silicon asymmetric compound filtering filtered clean gas of periosteum from impulse jet nozzle and enters dress
Internal pipeline is set, is finally discharged from gas outlet.
When device reaches blowback setting value, external high pressure gas enters device from back blow port, and impulse jet nozzle rapid operation is high
Body of calming the anger filters periosteum blowback from inside to outside to silicon carbide asymmetric compound, and silicon carbide asymmetric compound is filtered on periosteum outer wall
Cake layer blow off, realize regeneration.
Device serial or parallel connection uses；When being used in series, connect 1~10；When used in parallel, 2 rows in parallel, every row 1~5
Platform；Each device has 2 or 4 groups of silicon carbide asymmetric compound filtering periosteums, and every group can independently work, and individually control.
Device is equipped with pressure difference definite value and time definite value control system, and pressure difference definite value and time definite value control system are independently transported
Row.
Pressure transmitter mouth connects a set of differential pressure transmitter, is capable of the pressure difference of automatic collection air inlet and air outlet, when
When pressure difference reaches setting value, deduster is automatically into online blowback working condition；When time definite value control system works, device point
The not operation timing to each device automatically carries out blowback to the device for reaching time setting value respectively.
The advantageous effects of the above technical solutions of the present invention are as follows:
1. strainability is preferable.Silicon carbide asymmetric compound filtering periosteum prepared by the present invention carries out its pore structure
Meticulous gradient design, the aperture of film layer are 1~15 μm, and the aperture of supporter is 40~100 μm, form the gradient pore knot of tube wall
Structure, higher porosity assign screen pipe filter efficiency height, and resistance drop is small, and filtering accuracy is high, to the particulate matter of PM2.5 in flue gas
Still has good filter effect.
2. Thermal Synthetic is functional.Silicon carbide asymmetric compound filtering periosteum primary raw material prepared by the present invention is carbonization
Silicon, due to stable chemical performance, thermal coefficient is high, thermal expansion coefficient is small, and product is made to have excellent thermal shock resistance, acid and alkali resistance
And organic solvent, high temperature resistant, anti-microbe ability is strong, and mechanical strength is big, especially suitable for high temperature, high pressure, deep-etching organic film
Non-serviceable working condition.
3. long service life.Online backwashing is easy to operate, and when each group of cleaning does not influence other groups of filter cores and works normally,
Fast implement filter core regeneration, dust can resource utilization again, to atmospheric environment protection and energy saving be of great significance.
Detailed description of the invention
Fig. 1 is the preparation method process flow chart that aperture silicon carbide controlled asymmetric compound of the invention filters periosteum；
Fig. 2 is that silicon carbide asymmetric compound of the invention filters periosteum application apparatus structural schematic diagram；
Fig. 3 is that silicon carbide asymmetric compound of the invention filters periosteum application apparatus top view；
Fig. 4 is the structural schematic diagram that silicon carbide asymmetric compound filters periosteum connection in the embodiment of the present invention；
Fig. 5 is the operation schematic diagram in silicon carbide asymmetric compound of the present invention filtering periosteum application apparatus actual production.
Wherein: the gas outlet 1-, 2- pressure transmitter mouth, 3- gas bag slag-drip opening, 4- impulse jet nozzle, 5- square casing, 6- into
Port, 7- sewage draining exit, 8- pneumatic hammer, 9- fixing bolt, 10- lower fixed frame, 11- silicon carbide asymmetric compound filtering periosteum, 12- pressure
Poor transmitter, 13- upper holder, 14- back blow port, 15- gas bag air inlet, 16- population.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of preparation method of aperture silicon carbide controlled asymmetric compound filtering periosteum.
As shown in Figure 1, that the method comprising the steps of is as follows:
S1: the broken mill of raw material: it is 1mm that silicon carbide, pore creating material, sintering aid, inorganic high-temperature agglomerant are crushed to partial size respectively
Below；Then silicon carbide, sintering aid, inorganic high-temperature agglomerant are used into light-duty ball mill grinding 5h~14h respectively, cross 220 respectively
~380 meshes, it is spare；
S2: raw material mixing: light-duty ball mill is added in mass fraction ratio in the raw material prepared in S1 and is mixed: carbonization
Silicon 75%~90%, sintering aid 5%~15%, inorganic high-temperature agglomerant 5%~10%, using distilled water as dispersing agent, distillation
The mass ratio of water and raw material is 3:1, and mixed slurry is made in 1~3h of mixing；
S3: pelletizing: being put into balling-up in nodulizer for the mixed slurry prepared in S2,40~60 turns/min of nodulizer revolving speed,
Obtain spherical particle, 0.2~0.5mm of ball particle diameter；Spherical silicon-carbide particle: firing temperature is made using rotary kiln: 1100
~1400 DEG C, heating rate: 5~10 DEG C/min, the firing time: 8~20h；
S4: raw material mixing is aging: gained raw material in S1 and S3 is mixed to prepare mixture, the matter of each raw material in kneader
Measure score are as follows: spherical silicon-carbide particle: 75%~90%, inorganic high-temperature agglomerant: 5%~15%, sintering aid: 2%~10%,
Pore creating material: 2%~18%；Water-soluble binder, lubricant and water are added in mixture, the additional amount of water-soluble binder is
The 5%~10% of mixture quality, the additional amount of lubricant is the 2%~5% of mixture quality, and the additional amount of water is mixture
The 14%~18% of quality mixes 1~3h, then with vacuum deairing machine pugging, it is aging for 24 hours, obtain aging good pug；
S5: isostatic pressing: good pug aging in S4 is added in mold, is put into mold etc. after clean surface quiet
Pressurization in press, briquetting pressure are 180~200MPa, and it is 1000~3000mm that length, which is made, and outer diameter is 40~200mm, wall thickness
For the screen pipe green body of 5~12mm；
S6: body drying: the screen pipe green body of isostatic pressing in S5 is put into 30~60min of sizing in micro-wave oven, so
After be put into 120 DEG C of infrared drying ovens dry 3~8h, microwave power 5kW, frequency is 2450MHz ± 50MHz；
S7: green body firing: green body dried in S6 is put into shuttle kiln, is first warming up to 800 with the rate of 3 DEG C/min
DEG C, 2h is kept the temperature, then be warming up to 1200~1500 DEG C with the rate of 5 DEG C/min, keeps the temperature 8~15h, filter tube support body, mistake is made
Chimney filter supporter micropore size is 50~200 μm, and wall thickness is 6~10mm；
S8: filter tube support body outer surface obtained in S7 plasma spraying: is sprayed into one layer of mullite fiber and corundum
Slurry: mullite fiber is 1:2 with corundum mass ratio, and water content is the 40% of gross mass, forms filter membrane, filter membrane
With a thickness of 100~200 μm, through the dry 30~60min of micro-wave oven, be put into shuttle kiln firing: 1240~1300 DEG C of firing temperature is risen
Warm 5 DEG C/min of rate, 10~15h of firing time are prepared silicon carbide asymmetric compound filtering periosteum, filter the micropore of periosteum
Diameter is 0.1~2.0 μm, and film thickness is 100~200 μm.
As shown in Fig. 2, gas outlet 1 is located at using the device of the filtering periosteum of silicon carbide asymmetric compound made from this method
Device top, pressure transmitter mouth 2 are located at 15 top of gas bag air inlet, and gas bag air inlet 15 is located at device upper side, gas bag
Slag-drip opening 3 is located at 15 lower section of gas bag air inlet, and back blow port 14 is arranged beside gas bag slag-drip opening 3, and apparatus main body is square casing 5,
Upper holder 13 is arranged in 5 inner upper of square casing, and silicon carbide asymmetric compound filtering periosteum 11 is located in square casing 5, such as
Shown in Fig. 4, silicon carbide asymmetric compound filtering 11 bottom of periosteum is nested on fixing bolt 9, and fixing bolt 9 is connected with lower fixed frame 10
It connects, is fixed on upper holder 13 at the top of silicon carbide asymmetric compound filtering periosteum 11, silicon carbide asymmetric compound filters periosteum
11 tops are tightly connected with impulse jet nozzle 4；Air inlet 6 is located at 5 lower section side of device square casing, as shown in figure 3, air inlet 6
Population 16 is arranged in symmetrical side, and sewage draining exit 7 is located at bottom of device, and pneumatic hammer 8, the setting of 5 side of square casing are arranged below device
Pressure difference transmitter 12.
In practical applications, which can be used with serial or parallel connection；When being used in series, connect 1~10；It is used in parallel
When, 2 rows in parallel, every row 1~5；Each device has 2 or 4 groups of silicon carbide asymmetric compound filtering periosteums 11, and every group can distinguish
It works independently, individually controls.As shown in figure 5, being used in series schematic diagram, the air inlet series connection of two or more devices for the device
In the same admission line.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of preparation method of aperture silicon carbide controlled asymmetric compound filtering periosteum, it is characterised in that: comprise the following steps that
S1: the broken mill of raw material: it is 1mm or less that silicon carbide, pore creating material, sintering aid, inorganic high-temperature agglomerant are crushed to partial size respectively；
Then silicon carbide, sintering aid, inorganic high-temperature agglomerant are used into light-duty ball mill grinding 5h~14h respectively, cross 220~380 respectively
Mesh, it is spare；
S2: raw material mixing: light-duty ball mill is added in mass fraction ratio in the raw material prepared in S1 and is mixed: silicon carbide
75%~90%, sintering aid 5%~15%, inorganic high-temperature agglomerant 5%~10%, using distilled water as dispersing agent, distilled water
It is 3:1 with material quality ratio, mixed slurry is made in 1~3h of mixing；
S3: pelletizing: the mixed slurry prepared in S2 is put into balling-up in nodulizer, 40~60 turns/min of nodulizer revolving speed is obtained
Spherical particle, 0.2~0.5mm of ball particle diameter；Spherical silicon-carbide particle: firing temperature is made using rotary kiln: 1100~
1400 DEG C, heating rate: 5~10 DEG C/min, the firing time: 8~20h；
S4: raw material mixing is aging: gained raw material in S1 and S3 is mixed to prepare mixture, the quality point of each raw material in kneader
Number are as follows: spherical silicon-carbide particle: 75%~90%, inorganic high-temperature agglomerant: 5%~15%, sintering aid: 2%~10%, pore-creating
Agent: 2%~18%；Water-soluble binder, lubricant and water are added in mixture, the additional amount of water-soluble binder is mixing
The 5%~10% of material quality, the additional amount of lubricant is the 2%~5% of mixture quality, and the additional amount of water is mixture quality
14%~18%, mix 1~3h, then with vacuum deairing machine pugging, it is aging for 24 hours, obtain aging good pug；
S5: isostatic pressing: good pug aging in S4 is added in mold, mold is put into isostatic pressing machine after clean surface
Interior pressurization, briquetting pressure be 180~200MPa, be made length be 1000~3000mm, outer diameter be 40~200mm, wall thickness be 5~
The screen pipe green body of 12mm；
S6: body drying: the screen pipe green body of isostatic pressing in S5 is put into 30~60min of sizing in micro-wave oven, is then put
Enter dry 3~8h in 120 DEG C of infrared drying ovens, microwave power 5kW, frequency is 2450MHz ± 50MHz；
S7: green body firing: green body dried in S6 is put into shuttle kiln, is first warming up to 800 DEG C with the rate of 3 DEG C/min,
2h is kept the temperature, then is warming up to 1200~1500 DEG C with the rate of 5 DEG C/min, 8~15h is kept the temperature, filter tube support body, screen pipe is made
The micropore size of supporter is 50~200 μm, and wall thickness is 6~10mm；
S8: filter tube support body outer surface obtained in S7 plasma spraying: is sprayed into one layer of mullite fiber and corundum slurry:
Mullite fiber and corundum mass ratio are 1:2, and water content is the 40% of gross mass, form filter membrane, the thickness of filter membrane
It is 100~200 μm, through the dry 30~60min of micro-wave oven, is put into shuttle kiln firing: 1240~1300 DEG C of firing temperature, heating speed
5 DEG C/min of rate, 10~15h of firing time are prepared silicon carbide asymmetric compound filtering periosteum, filter the micro-pore diameter of periosteum
It is 0.1~2.0 μm, film thickness is 100~200 μm.
2. the preparation method of aperture silicon carbide controlled asymmetric compound filtering periosteum according to claim 1, feature exist
In: the pore creating material is one or more of methylcellulose, starch, carbon dust, rice husk, and the sintering aid is yttrium oxide, oxygen
Change one or more of calcium, aluminium nitride, magnesia, rare earth oxide, the inorganic high-temperature agglomerant is silica, kaolinite
One or more of soil, bentonite, aluminium oxide, the water-soluble binder are carboxymethyl cellulose, polyvinyl alcohol, waterglass
One of, the lubricant is one or both of tung oil, soya-bean oil.
3. the preparation method of aperture silicon carbide controlled asymmetric compound filtering periosteum according to claim 1, feature exist
In: the porosity of silicon carbide asymmetric compound obtained filtering periosteum is 30%~60% in the S8, softening temperature >=1300
DEG C, 800 DEG C~20 DEG C anti-thermal shocks, which recycle 30 times, not to crack, acid-fast alkali-proof >=99.5%, compression strength >=34MPa, to flue gas
Efficiency of dust collection is up to 99.8%.
4. made from the preparation method of application silicon carbide controlled asymmetric compound in aperture according to claim 1 filtering periosteum
The device of silicon carbide asymmetric compound filtering periosteum, it is characterised in that: including gas outlet (1), pressure transmitter mouth (2), gas bag
Slag-drip opening (3), impulse jet nozzle (4), square casing (5), air inlet (6), sewage draining exit (7), pneumatic hammer (8), fixing bolt (9), under
Fixed frame (10), silicon carbide asymmetric compound filter periosteum (11), pressure difference transmitter (12), upper holder (13), back blow port
(14), gas bag air inlet (15) and manhole (16)；Gas outlet (1) is located at device top, pressure transmitter mouth (2) be located at gas bag into
Above port (15), gas bag air inlet (15) is located at device upper side, and gas bag slag-drip opening (3) is located under gas bag air inlet (15)
Back blow port (14) are arranged in side, gas bag slag-drip opening (3) side, and apparatus main body is square casing (5), square casing (5) inner upper
It is arranged upper holder (13), silicon carbide asymmetric compound filtering periosteum (11) is located in square casing (5), and silicon carbide is asymmetric multiple
It closes filtering periosteum (11) bottom to be nested on fixing bolt (9), fixing bolt (9) is connected with lower fixed frame (10), and silicon carbide is non-right
Claim combined filtration periosteum (11) at the top of be fixed on upper holder (13), silicon carbide asymmetric compound filter periosteum (11) at the top of with
Impulse jet nozzle (4) is tightly connected；Air inlet (6) is located at side below device square casing (5), and the symmetrical side of air inlet (6) is set
It sets population (16), sewage draining exit (7) is located at bottom of device, pneumatic hammer (8) is arranged below device, square casing (5) side setting pressure
Poor transmitter (12).
5. the application apparatus of aperture silicon carbide controlled asymmetric compound filtering periosteum according to claim 4, feature exist
In: 20~960 silicon carbide asymmetric compound filterings periosteum (11) of filtering indoor location in the middle part of the square casing (5) contain
Cloud of dust gas from air inlet (6) enter filter chamber, be carbonized silicon asymmetric compound filter periosteum (11) filtered clean gas from
Impulse jet nozzle (4) enters device internal pipeline, is finally discharged from gas outlet (1).
6. the application apparatus of aperture silicon carbide controlled asymmetric compound filtering periosteum according to claim 4, feature exist
In: when device reaches blowback setting value, external high pressure gas from back blow port (14) enter device, impulse jet nozzle (4) rapid operation,
High pressure gas filters periosteum (11) blowback from inside to outside to silicon carbide asymmetric compound, and silicon carbide asymmetric compound is filtered periosteum
(11) cake layer on outer wall is blown off, and realizes regeneration.
7. the application apparatus of aperture silicon carbide controlled asymmetric compound filtering periosteum according to claim 4, feature exist
In: device serial or parallel connection uses；When being used in series, connect 1~10；When used in parallel, 2 rows in parallel, every row 1~5；Often
Platform device has 2 or 4 groups of silicon carbide asymmetric compound filterings periosteum (11), and every group can independently work, and individually controls.
8. the application apparatus of aperture silicon carbide controlled asymmetric compound filtering periosteum according to claim 4, feature exist
In: device is equipped with pressure difference definite value and time definite value control system, pressure difference definite value and time definite value control system independent operating.
9. the application apparatus of aperture silicon carbide controlled asymmetric compound filtering periosteum according to claim 8, feature exist
In: the pressure transmitter mouth (2) connects a set of differential pressure transmitter, is capable of the pressure of automatic collection air inlet (6) and gas outlet (1)
Difference, when the differential reaches a set point, deduster is automatically into online blowback working condition；The work of time definite value control system
When, the device operation timing to each device automatically respectively carries out blowback to the device for reaching time setting value respectively.
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| CN112221278A (en) * | 2020-09-23 | 2021-01-15 | 中国科学院金属研究所 | Power plant tail gas CO2Flue gas pre-purification system before trapping |
| CN115228284A (en) * | 2022-06-16 | 2022-10-25 | 江苏京源环保股份有限公司 | Ceramic membrane filtration equipment for collecting waste heat of high-temperature flue gas and removing dust for catalysis |
| CN115894072A (en) * | 2022-12-29 | 2023-04-04 | 江苏省宜兴非金属化工机械厂有限公司 | Corrosion-resistant ceramic filter plate and preparation method thereof |
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